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Using PortShield Interfaces

Configuring PortShield Interfaces

Benefits

The benefits of PortShield interfaces are:

Increased Manageability

• Provides a helpful organization mechanism that enables you to easily group ports into logical units

reserved for topically-related traffic.

• Enables software configurations to be made uniform across devices by collapsing like resources into

a single subnetwork. As an example, using PortShield interfaces can reduce the number of

implementations of local server resources like DHCP.

Increased Performance

• Provides improved traffic efficiency by enabling you to reserve port groups for more demanding

traffic and other port groups for less demanding traffic.

• Provides improved traffic efficiency by enabling you to group users into logical networks by

limiting traffic to users performing similar functions, improving efficiency.

Increased Security

• It enables you to block designated ports from accepting sensitive information, segmenting the ports

from more general traffic targeted for other ports which may be more prone to performance

degrading packet analysis, and filtering mechanisms.

• It enables you to insulate designated ports from distressed segments experiencing flutter or that have

failed, reducing the potential for data loss, degraded data, and floods of error messages.

Platforms

The PortShield interface feature is available on the SonicWALL PRO 1260 running SonicOS Enhanced

version 3.1 or newer.

Supported Standards and RFCs

The SonicWALL PortShield interface technology feature supports the IEEE 802.1q standard, although

802.1q-based VLAN support is not available to the SonicWALL PRO 1260 as a user-controllable

function. 802.1q tags are used internally by the PortShield interface function to direct packets to the

correct interface after they enter the device.

The SonicWALL PortShield interface technology is based on the following RFCs, IEEE and other

standards documents:

• ISO/IEC 15802-3

• IEEE 802.1q VLAN Tagging draft

Using PortShield Interfaces

This section contains the following subsections:

• “Prerequisites” on page 4

• “Configuration Tasks” on page 4

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